"Lucky Star Zaizai Three and a Half Years Old" is a light and interesting romance novel. A strong career woman once passed through the book and became Su Yinwan, a cute three-and-a-half-year-old daughter of the father-in-law, nicknamed Nannan. In the original book, the unpopular prince Lu Citing would turn dark due to being bullied. Su Yinwan was determined to change his fate, so she hugged Lu Citing's thigh tightly. The Duke doted on his daughter, and the Emperor's uncle also loved Su Yinwan and doted on her to the heavens. With her intelligence, kindness and bravery, Su Yinwan not only helped Lu Citing resolve crises many times, but also worked with the Duke's government to change some of the changes in the court. In the end, she successfully avoided the tragic ending of the original book, gained a happy love with Lu Citing, and lived a life of double success in love and career.